Insecticide



--Patented Dec; 13, 1927 UNITED STATES FRANZ ZERNIK, F BERLIN, GERMANY.

INSEGTICIDE.

No Drawhig. Application filed May'19, 1923, Serial No. 640,227, and in Germany It has been found that elemental sulphur is soluble in esters having an antiparasitic efiect and thus essentially increasesthe efiiciency of such substances. The solubilit of sulphur in such esters was not to be oreseen, for as solvent agents for sulphur there were known hitherto only ordinary-hydrocarbons, chlorinated and sulphurated hydrocarbons, as for instance sulphuret of carbon, monochloride of sulphur,

cohol, ether, aniline, coal-tar-oil and terpenes.

It is already known that by the addition of sulphur the eifect of antiparasitic medicaments is increased, the effect of sulphur be:

ing the more energetical the more the sulphur is distributed. For this reason the sulphur has been added to such medicaments either in colloidal form, or organic sulphurcompositions have 7 been employed from which the sulphur is gradually freed by the organism itself. In both cases a relative- 'ly high amount of sulphur was required in order that the organism might bring in- 5 to solution the-amount necessary for the therapeutic'al effect.

' According to the present invention only a very small amount of sulphur is neces sitated, because by dissolvingthe sulphur furthermore al-' May 26, 1922.

in esters having an antiparasitic effect, such as benzoate of benzylic-alcohol, mononaphthenate of ethylene glycole, cinnamate of benzylic-alcohol, benzoate of cinnamylicalcohol etc. the sulphur is presented in dissolved form to the organism.

E wamples.

1. 1,5 g. sulphur are dissolved in 98,5 g. benzoate of benzylic-alcohol by heating.

2. 10,75 g. sulphur are dissolved in 99,25 g. mononaphthenate of ethylene glycole.

What I claim is 1: As sin-insecticide an ester of an organic acid with an organic base having an antiparasitic effect containing elemental sulfur in solution therein.

'2. As an insecticide an antiparasitic ester of an alcohol and an aromatic carboxylic acid containing elemental sulphur in solution therein.

3. As an insecticide anantiparasitic mono ester of an alcohol and an aromatic carboxylic acid containing elemental sulphur in solution therein.

In testimony whereof, I afiix my signature.

DR; FRANZ ZERNIK;

. CERTIFICATE or CORRECTION.

Patent No. 1, 652,339. Granted December 13, 1927, to

FRANZ ZERNIK. 1

It is hereby certified that error appears in the printed specification ofthe above numbered patent requiring correction as follows: Line 16, after the word "more"sec ond occurrence insert the word "finely"; and that the suid Letters Patent should be read with this correction therein that the same mayeonform to the record of the case in the Patent Office.

Signed and sealedthis 24th day of.January, A. D. 1928.

M. J. Moore, Seal. Acting Commissioner of Patents. 

